BDS-04-29_-_ENG 驻车制动蹄(用于新设计)

B r e m b o c o p y r i g h t - A l l r i g h t s r e s e r v e d
1 1
REQUIREMENTS Shear resistance Compressibility Corrosion resistance Environmental requirements Tribological requirements
EXAMPLE OF INDICATION IN DRAWING
L
Underside of rim
Ref in
Part name
Fig. 1
a Web
b Rim
c Friction material
As in ISO 15484.
Requirements
Density must be within the limits specified in the drawing.
Note: the difference between the specified maximum limit and minimum limit is generally 0,30 g/cm3.
To determine the hardness of the friction material.
Test procedure
As in JIS D4421 (specified in ISO 15484).
Hardness is to be expressed using one of the following Rockwell scales:
3.3.1.
3.3.2.
at ambient temperature;
at high temperature (200 °C).
At the discretion of the supplier, tests can be conducted on the friction material in its entirety, or on friction material divided into sectors as specified in ISO 6312.
To ensure dependable results, shoes presenting friction material of width greater
than 50 mm (dimension L in Fig. 1) must be prepared for and subjected to testing
in the following manner:
Before the test, make a longitudinal cut in the friction material, coinciding with
the median line of the width dimension L; the cut must be 2 ÷ 3 mm wide and
penetrate in depth down to the metal of the shoe, so that the friction material is
separated into two distinct halves.
Conduct the test applying the load first on one side of the shoe, to the point of
forcing the detachment of one half of the friction material.
Conduct the test applying the load first on the other side of the shoe, to the
point of forcing the detachment of the remaining half of the friction material.
Requirements
a. The shear force, at both ambient temperature and high temperature, must be
Requirements
Compressibility at ambient temperature : 1 % MAX of the initial thickness of the friction material.
Compressibility at high temperature: 2 % MAX of the initial thickness of the friction material.
Corrosion resistance
To determine the corrosion resistance limit of the complete brake shoe.
Test procedure
Salt spray corrosion test, procedure as in NSS - UNI EN ISO 9227.
Requirements
The resistance, under exposure to salt spray, before the first spots of red corrosion
NOTES
Any directions
this specification.
STANDARDS REFERRED TO IN THE TEXT
Type of standard Reference number
Brembo BDS-08.14
ISO 6310; 6312; 15484
UNI UNI EN ISO 9227 Japanese Industrial
JIS 4421
Standard。